1 /* 2 * libtxc_dxtn 3 * Version: 1.0 4 * 5 * Copyright (C) 2004 Roland Scheidegger All Rights Reserved. 6 * 7 * Permission is hereby granted, free of charge, to any person obtaining a 8 * copy of this software and associated documentation files (the "Software"), 9 * to deal in the Software without restriction, including without limitation 10 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 11 * and/or sell copies of the Software, and to permit persons to whom the 12 * Software is furnished to do so, subject to the following conditions: 13 * 14 * The above copyright notice and this permission notice shall be included 15 * in all copies or substantial portions of the Software. 16 * 17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 20 * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN 21 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 22 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 23 */ 24 25 #ifndef _TXC_DXTN_H 26 #define _TXC_DXTN_H 27 28 #include <GL/gl.h> 29 30 typedef GLubyte GLchan; 31 #define UBYTE_TO_CHAN(b) (b) 32 #define CHAN_MAX 255 33 #define RCOMP 0 34 #define GCOMP 1 35 #define BCOMP 2 36 #define ACOMP 3 37 38 void fetch_2d_texel_rgb_dxt1(GLint srcRowStride, const GLubyte *pixdata, 39 GLint i, GLint j, GLvoid *texel); 40 void fetch_2d_texel_rgba_dxt1(GLint srcRowStride, const GLubyte *pixdata, 41 GLint i, GLint j, GLvoid *texel); 42 void fetch_2d_texel_rgba_dxt3(GLint srcRowStride, const GLubyte *pixdata, 43 GLint i, GLint j, GLvoid *texel); 44 void fetch_2d_texel_rgba_dxt5(GLint srcRowStride, const GLubyte *pixdata, 45 GLint i, GLint j, GLvoid *texel); 46 47 void tx_compress_dxtn(GLint srccomps, GLint width, GLint height, 48 const GLubyte *srcPixData, GLenum destformat, 49 GLubyte *dest, GLint dstRowStride); 50 51 #endif /* _TXC_DXTN_H */ 52